cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A013931 a(n) is squarefree and sum of all squarefrees <= a(n) is squarefree.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 6
6 10
7 13
8 15
9 19
10 22
11 26
12 30
13 31
14 35
15 38
16 39
17 41
18 43
19 51
20 55
21 59
22 65
23 66
24 67
25 69
26 70
27 73
28 74
29 78
30 79
31 82
32 85
33 86
34 89
35 93
36 95
37 97
38 102
39 103
40 105
41 110
42 111
43 113
44 118
45 122
46 123
47 129
48 130
49 131
50 133
51 134
52 137
53 139
54 142
55 143
56 145
57 149
58 154
59 155
60 157
61 159
62 163
63 166
64 167

List of values

[1, 2, 3, 5, 6, 10, 13, 15, 19, 22, 26, 30, 31, 35, 38, 39, 41, 43, 51, 55, 59, 65, 66, 67, 69, 70, 73, 74, 78, 79, 82, 85, 86, 89, 93, 95, 97, 102, 103, 105, 110, 111, 113, 118, 122, 123, 129, 130, 131, 133, 134, 137, 139, 142, 143, 145, 149, 154, 155, 157, 159, 163, 166, 167]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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